I've recently started using Erg mode for turbo workouts and am trying to put together a suite of workouts to fall back on whenever I don't have time or can't be bothered searching though the thousands available.

On weeknights I generally do 45 or 60mins so (after googling the various lengths and intensities of intervals) I've built the following to give both options:

Sessions 1 to 4 are basically Sufferfest sessions (in order Hell Hath No Fury, A Very Dark Place, Revolver, The Long Scream). These are the ones I use most. I also use Power Station, To Get To The Other Side, Elements of Style, Rubber Glove on a reasonably regular basis. The others less frequently.